package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.dto.DishDTO;
import com.sky.dto.DishPageQueryDTO;
import com.sky.entity.Dish;
import com.sky.entity.DishFlavor;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.mapper.DishFlavorMapper;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealDishMapper;
import com.sky.result.PageResult;
import com.sky.service.DishService;
import com.sky.vo.DishVO;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.ArrayList;
import java.util.List;

@Slf4j
@Service
public class DishServiceImpl implements DishService {

    @Autowired
    DishMapper dishMapper;
    @Autowired
    DishFlavorMapper dishFlavorMapper;

    @Autowired
    SetmealDishMapper setmealDishMapper;

    @Override
    @Transactional
    public void saveWithFlavor(DishDTO dishDTO) {

        //向菜品表插入1条数据
        Dish dish = new Dish();
        BeanUtils.copyProperties(dishDTO, dish);
        dishMapper.insert(dish);
        Long dishid = dish.getId();
        //向口味表插入n条数据

        List<DishFlavor> flavors = dishDTO.getFlavors();
        if(flavors != null && flavors.size() > 0) {
            flavors.forEach(flavor -> {
                flavor.setDishId(dishid);
            });
            dishFlavorMapper.insert(flavors);
        }




    }

    @Override
    public PageResult pageQuery(DishPageQueryDTO dishPageQueryDTO) {
        PageHelper.startPage(dishPageQueryDTO.getPage(),dishPageQueryDTO.getPageSize());
        Page<DishVO> page=dishMapper.pageQuery(dishPageQueryDTO);

        return new PageResult(page.getTotal(),page.getResult());
    }

    @Override
    @Transactional
    public void deleteBatch(List<Long> ids) {
        //判断当前菜品是否处于起售中
        for(Long id : ids) {
            Dish dish=dishMapper.getById(id);
            if(dish.getStatus()== StatusConstant.ENABLE){
                throw new DeletionNotAllowedException(MessageConstant.DISH_ON_SALE);
            }

        }

        //判断当前菜品是否被套餐关联
        List<Long> setmealIds=setmealDishMapper.getSetmealDishIds(ids);
        if(setmealIds != null && setmealIds.size() > 0) {
            throw new DeletionNotAllowedException(MessageConstant.DISH_BE_RELATED_BY_SETMEAL);
        }
        //删除菜品表菜品数据
         for(Long id : ids) {
             dishMapper.deleteById(id);
             dishFlavorMapper.deleteByDishId(id);
         }
        //删除菜品关联的口味数据
    }

    @Override
    public DishVO getByIdWithFlavor(Long id) {
        //根据id查询菜品数据
        Dish dish=dishMapper.getById(id);
        //根据菜品id查询口味数据
        List<DishFlavor> dishFlavors=dishFlavorMapper.getByDishId(id);
        //将查询到的数据封装到VO
        DishVO dishVO=new DishVO();
        BeanUtils.copyProperties(dish,dishVO);
        dishVO.setFlavors(dishFlavors);
        return dishVO;
    }

    @Override
    public void updateWithFlavor(DishDTO dishDTO) {
        Dish dish=new Dish();
        BeanUtils.copyProperties(dishDTO,dish);
        //修改菜品表基本信息
        dishMapper.update(dish);
        dishFlavorMapper.deleteByDishId(dish.getId());
        List<DishFlavor> flavors=dishDTO.getFlavors();
        if(flavors != null && flavors.size() > 0) {
            flavors.forEach(flavor -> {
                flavor.setDishId(dish.getId());

            });
            dishFlavorMapper.insert(flavors);
        }





    }

    @Override
    public List<DishVO> listWithFlavor(Dish dish) {
        List<Dish> dishList = dishMapper.list(dish);

        List<DishVO> dishVOList = new ArrayList<>();

        for (Dish d : dishList) {
            DishVO dishVO = new DishVO();
            BeanUtils.copyProperties(d,dishVO);

            //根据菜品id查询对应的口味
            List<DishFlavor> flavors = dishFlavorMapper.getByDishId(d.getId());

            dishVO.setFlavors(flavors);
            dishVOList.add(dishVO);
        }

        return dishVOList;
    }

    @Override
    public void startOrStop(Integer status, Long id) {
        Dish dish=Dish.builder()
                .id(id)
                .status(status)
                .build();
        dishMapper.update(dish);
    }

    @Override
    public List<Dish> list(Long categoryId) {
        Dish dish=Dish.builder()
                .status(StatusConstant.ENABLE)
                .categoryId(categoryId)
                .build();
        return dishMapper.list(dish);
    }


}
